.header{
    width: 100%;
    height: 60px;
    background-color: #bfbfbf;
    min-width: 800px;
    position: fixed;
}

.header h3{
    float: left;
    font-size: 25px;
    padding: 5px 30px;
    line-height: 50px;
}

.header .welcome a{
    font-size: 18px;
    padding: 5px 30px;
    line-height: 50px;
}
.header .welcome p{
    font-size: 20px;
    padding: 5px 30px;
    line-height: 50px;
}

.sidebar{
    position: fixed;
    top:62px;
    width: 20%;
    min-width: 200px;

}

.sidebar .item{
    margin-top: 5px;
    margin-bottom: 5px;
    padding-left: 20px;
}
.sidebar .item a{
    font-size: 18px;
    font-weight: bold;
    color: #8c8c8c;
}
.sidebar .item a:hover{
    color: #595959;
}
.sidebar .label{
    font-size: 18px;
    font-weight: bold;
}


.showpage{
    position: absolute;
    z-index: -1;
    right:0px;
    width: 80%;
    top: 62px;
}